2SK69 SPICE model?

profun

Member
2012-04-06 5:57 am
Anyone could send me the 2SK69 spice model file?
 

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Ian Finch

Member
Paid Member
2010-04-11 4:22 am
Coffs Harbour, NSW
That is an interesting page about making your own models for tubes. It still assumes you have accurate data for the device you wish to model.

Ilimzn asked where you bought the 2SK69 VFETs and I am asking for a datasheet so that others have a basis for a model, if someone is prepared to make one. Do you have full specifications for 2SK69?
 

Ian Finch

Member
Paid Member
2010-04-11 4:22 am
Coffs Harbour, NSW
If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.

Unfortunately, no datasheet = no model possible.

Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
 

profun

Member
2012-04-06 5:57 am
If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.

Unfortunately, no datasheet = no model possible.

Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
thanks,but I think it is too difficult to finish.:(

Search: 2SK69
N-Channel V-FET
V(BR)DSS (V)=140
V(BR)GSS (V)=140
I(D) Abs. Drain Current (A)=100m
Absolute Max. Power Diss. (W)=800m
I(GSS) Max. (A)=10u
V(GS)off Max. (V)=7.0
I(DSS) Min. (A)=48m
g(fs) Min. (S) Trans. conduct.=30m
@V(DS) (V) (Test Condition)=10
C(iss) Max. (F)=28p
Status=Discontinued
Package=TO-9
Military=N
 
Last edited:

Toht

Member
2014-10-15 3:48 pm
Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf
Hi!
I am currently developing my own analog circuits simulator, based on a dictionary of elementary components. I would like to add a JFET model based on those in Spice, so I'm interested in your "CH9_FETs.pdf" file, but I can't access to it (login needed :( ).
Is there any other way to get it?
 
If you understand what a spice model is, what it looks like and what the abbreviated data is, you wouldn't ask that question. To prepare models, you would need to run accurate tests to determine the parameters such as the one shown by the curve tracer graph, but that is only one. When you a have a full set of parameters, they can be converted to terms that are compatible with spice data files for the software program.

Unfortunately, no datasheet = no model possible.

Here is a paper for preparing spice models for small signal JFETs and MOSFETs. Note that more data is required for large signal (power) applications where thermal and capacitive properties have significant influence on performance. You can see the considerable amount of data required. http://engr.case.edu/merat_francis/eecs245/PSpice_references/CH9_FETs.pdf

Ian, even a basic model based on the curves without propper capacitance simulations should be possible. If i recall, someone developed a curve capture program that was originally intended for tubes (triodes). This may be useful. I am not sure but i think it generated a polinome based approximation of triode curves. It will not be accurate down at low voltages and currents but may well be usable enough.
 

Ian Finch

Member
Paid Member
2010-04-11 4:22 am
Coffs Harbour, NSW
.......I'm interested in your "CH9_FETs.pdf" file, but I can't access to it (login needed :( ).
Is there any other way to get it?
Last I looked, there was no login problem but I think this is the author or at least editor of the PDF in question. Perhaps you could email him and get advice on how to access the information:
Frank Merat.